private void setUpMappingsHM() {
   typeToClassMappingProp = new Properties();
   URL url = UserInputUIHandler.class.getClassLoader().getResource(mappingTxt);
   if (url == null) {
     showErrorMessage(ProvClientUtils.getString("TypeToUIElementMapping.txt file is not found"));
     return;
   }
   try {
     typeToClassMappingProp.load(url.openStream());
   } catch (IOException ioe) {
     ioe.printStackTrace();
   }
 }